【摘要】 <正> 恶性肿瘤已经成为我国城市居民的主要疾病死亡原因之一,据1982年统计,全国城市居民的主要疾病死亡原因中,恶性肿瘤居第三位,占总死因的20.6％,但与第一位的脑血管病(22.26％)和第二位的心脏病(21.05％)已很接近。而在某些城市(上海、西安、广州),已居各种死因的第一位(表1,图1)。更多还原

【Abstract】 Lung cancer is one of the major health problems in Guangzhou. The death rate is increasing rapidly and the increasing trend still persists. Since 1970 a variety of data related to lung cancer have been collected, such as concentration of air pollutants（SO₂, SD, TSP, etc.）, density of population, coal consumption, cigarette sales, etc. These collected data have been introduced in the equations of linear, multiple and step regression. The results suggest that the coal consumpt on in households is the main factor. The sex ratio of different cell types of lung cancer such as epidermoid carcinoma and adenocarcinoma in Guangzhou is close to that in Shanghai but not that of Hong Kong although Hong Kong is near Guangzhou geographically and the majority of the Hong Kong residents are Cantonese. This difference is a notable evidence. The fuel used for cooking is also different, which in Hong Kong is mainly kerosene or gas but in Guangzhou mainly coal.更多还原